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Finding the Fourth Proportional to 165.63, 228.56 and 91.95

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Solution

The fourth proportional to 165.63, 228.56 and 91.95 is: 126.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.63 : 228.56 = 91.95 : x
  2. Step 2: Convert to fraction form
    165.63/228.56 = 91.95/x
  3. Step 3: Cross multiply
    165.63x = 228.56 × 91.95
  4. Step 4: Simplify right side
    165.63x = 21,014.95
  5. Step 5: Solve for x
    x = 21,014.95/165.63
  6. Step 6: Final answer
    x = 126.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.